I've lost the cable that connects my phone to my pc so can't upload any photos atm, but the plants are looking really good.

I've not given them any nutes since my original post here, and have also been watering exclusively with bottled mineral water. The evil spots haven't spread any further and theres lots of fresh growth going on. I will resume feeding soon and see how they react.

If everything goes to plan I think I'll put them into flower in around 3 weeks time and hopefully will have some nice results to show you guys, thanks a lot for your help :thumbsup: